Chocolate bar



FIG. 1 is a perspective view of a chocolate bar, showing my new design;

FIG. 2 is a front elevation view thereof, the rear view being identical thereto;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a right elevation view thereof, the left side elevation view being identical thereto. 

CLAIM I claim the ornamental design for a chocolate bar, as shown and described. 